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This series consists of a collection of reports on trials and demonstrations of various systems, applications and agreements for the establishment of stations, permits to conduct experiments, departmental and Parliamentary reports and miscellaneous correspondence on the subject, including references to the establishment of an Imperial Wireless Chain.

Significant items in this series include a collection of original letters to Sir William Preece, the Post Office Engineer-in-Chief and electrician, from Guglielmo Marconi dating from the latter's arrival in the United Kingdom, and which describe a number of experiments in wireless telegraphy.